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Effect of P/Bi substitution on optical and thermal properties of Ga-Ge-Se-Te glasses

Abstract : Novel P-containing bulk BixGa5Ge20P10-xSe45Te20 glasses have been successfully fabricated and studied with optical spectroscopy and differential scanning calorimetry. Non-isothermal and isothermal crystallization kinetics are investigated, and anti-Arrhenius behavior is observed for the crystallization of some phases in x = 1 glass. The thermal stability of the glass is shown to decrease with an increase in Bi concentration, whereas as the concentration of P increases, the glass stability increases and the glass does not crystallize during regular DSC heating scans. It is found that substitution of P with Bi in glass composition leads to a decrease in the optical gap and increase in its density.
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Submitted on : Friday, April 24, 2020 - 9:01:28 PM
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R. Golovchak, M.J. Seage, J. Szlęzak, Y. Shpotyuk, D. Płoch, et al.. Effect of P/Bi substitution on optical and thermal properties of Ga-Ge-Se-Te glasses. Journal of Alloys and Compounds, Elsevier, 2020, 835, pp.155224. ⟨10.1016/j.jallcom.2020.155224⟩. ⟨hal-02554030⟩

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